<template>
    <div class="auth-page">
        <div class="container page">
            <div class="row">

                <div class="col-md-6 offset-md-3 col-xs-12">
                    <h1 class="text-xs-center">{{isLogin ? "Sign in" : "Sign up"}}</h1>
                    <p class="text-xs-center">
                        <!-- <a href="">Have an account?</a> -->
                        <nuxt-link v-if="isLogin" to="/register">Need an account?</nuxt-link>
                        <nuxt-link v-else to="/login">Have an account?</nuxt-link>
                    </p>

                    <ul class="error-messages">
                        <template v-for="(messages,field) in errors">
                            <li v-for="(message,index) in messages" :key="index">{{field}} {{message}}</li>
                        </template>
                    </ul>

                    <form @submit.prevent="onSubmit">
                        <fieldset class="form-group" v-if="!isLogin">
                            <input v-model="user.username" class="form-control form-control-lg" type="text"
                                placeholder="Your Name" required>
                        </fieldset>
                        <fieldset class="form-group">
                            <input v-model="user.email" class="form-control form-control-lg" type="email"
                                placeholder="Email" required>
                        </fieldset>
                        <fieldset class="form-group">
                            <input v-model="user.password" class="form-control form-control-lg" type="password"
                                placeholder="Password" required minlength="8">
                        </fieldset>
                        <button class="btn btn-lg btn-primary pull-xs-right">
                            {{isLogin ? "Sign in" : "Sign up"}}
                        </button>
                    </form>
                </div>

            </div>
        </div>
    </div>
</template>

<script>
import { login, register } from "@/api/user.js"

// 只在客户端加载 js-cookie 包
const Cookie = process.client ? require("js-cookie") : undefined

export default {
    middleware: 'notAuth',
    name: "LoginIndex",
    computed: {
        isLogin () {
            return this.$route.name === "login"
        }
    },
    data () {
        return {
            user: {
                username: "",
                email: "",
                password: ""
            },
            // 错误信息
            errors: {}
        }
    },
    methods: {
        async onSubmit () {
            try {
                // 提交表单请求登录
                const { data } = this.isLogin ?
                    await login({ user: this.user }) :
                    await register({ user: this.user })

                // 保存用户的登录状态
                this.$store.commit("setUser", data.user)

                // 为了防止刷新页面数据丢失，我们需要把数据持久化
                Cookie.set("user", data.user)

                // 跳转到首页
                this.$router.push("/")
            } catch (err) {
                this.errors = err.response.data.errors
            }
        }
    }
}
</script>

<style lang='' scoped>
</style>
